[1] Kaohsiung Med Univ Hosp, Kaohsiung Municipal Ta Tung Hosp, Dept Internal Med, Kaohsiung, Taiwan
[2] Kaohsiung Med Univ Hosp, Div Pulm & Crit Care Med, Kaohsiung, Taiwan
[3] Kaohsiung Med Univ Hosp, Dept Internal Med, Kaohsiung, Taiwan
[4] Kaohsiung Med Univ, Coll Med, Sch Med, Kaohsiung, Taiwan
[5] Natl Taiwan Univ Hosp, Dept Internal Med, Hsin Chu Branch, Hsinchu, Taiwan
[6] Natl Taiwan Univ Hosp, Dept Internal Med, 7 Chung Shan South Rd, Taipei 10002, Taiwan
[7] Natl Taiwan Univ, Coll Med, Sch Med, Taipei, Taiwan
[8] Taipei Med Univ, Wanfang Hosp, Div Pulm Med, Taipei, Taiwan
[9] Taipei Med Univ, Wanfang Hosp, Pulm Res Ctr, Taipei, Taiwan